Engine Cut-out At Red Line

sorry if this has been posted before; didn't find anything in a search. just noticed that my 09 GT's engine cuts out at high rpm's (6000+). it runs fine up until then, and as soon as you back off the throttle it runs fine again. seems like a computer thing to me because the stopping and starting of the engine is very abrupt; there's no sputtering or any kind of weird noise. dials and gauges and everything still work. bought the car new in 09; has less than 5K miles on it. can't remember if the standard warranty was 3 years or five years; if it's 3 years, it just ran out a couple weeks ago. would appreciate any ideas.

okay everybody, thanks for the info. i thought it might be something like that, but wasn't sure. i don't drive the car very much, and i guess i never had it over 6000 rpms before. probably a good thing it's there, so i didn't screw up the engine. thanks again.